Severity
Incident
Leak
Yes
Ignition
No

Incident Synopsis
While disconnecting a liquid H2 fill line from a liquid H2 trailer, liquid H2 escaped, burning a second man who was holding the hose. The man was burned on his hands and on his stomach.

Cause
The liquid H2 shut off valve was partially open, but both men assumed it was closed. Prescribed clothing was being worn.

Incident Date
Dec 31, 1969
Equipment
  • Piping/Fittings/Valves
  • Valve
  • Piping/Fittings/Valves
  • Flexible Tubing
  • Vehicle & Fueling Systems
  • Liquid Hydrogen Delivery Vehicle
Damage and Injuries
Characteristics
When Incident Discovered
Lessons Learned

Standard procedure must be followed in all cases. Assumptions are made at great risk. Risk also increases with complacency.